This is the entrance to "Hercules Leg" - one of the lava tube caves we went into.
As we climbed closer, the cave opening became more obvious. This is one cave that does not have a ladder or stairs, but has a natural, easily accessed entrance.Below, you can see why they named this cave Hercules Leg - this huge pillar in the middle of the cave. It is possible to walk all the way around this pillar - it is a true pillar. It is amazing how well the flash lit up the interior of the caves - they were VERY dark inside. (headlamps and flashlights required!)
Here is Joe as we were leaving the cave.